Colorado River Run 100 Mile
A Thanksgiving weekend trail ultra at Turkey Bend on the Texas Colorado River, running 100 mile and 50 mile races before Saturday's 50K and marathon.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 24, 2026.
Quick facts
- 100 mile and 50 mile races start Friday, with the 50K, marathon, and shorter events on Saturday.
- Trail running at Turkey Bend Recreation Area on the Colorado River.
- Generous cutoffs and on-site camping keep the weekend approachable for first ultras.
- Thanksgiving weekend slot makes it one of the few Texas trail 100s over the holiday.
2026 Colorado River Run 100 Mile registration
Registration for the 2026 Colorado River Run 100 Mile runs through the official registration page at runsignup.com.
About the Colorado River Run 100 Mile
Fit Foundation stages this holiday trail weekend at Turkey Bend Recreation Area on the Colorado River near Marble Falls, with the 100 mile and 50 mile races starting Friday morning and the 50K, marathon, half, 10K, and 5K following on Saturday. The long races draw runners who want a low-key Hill Country ultra with camping at the venue rather than a stacked competitive field.
Course
The route stays on the trail network around Turkey Bend, mixing riverbank stretches, rocky sections, and dirt singletrack. Footing changes often, and the 100 mile runs through Friday night, so lights and steady feet matter more than raw speed.
Race-day weather
Late November in the Hill Country usually means cool mornings and mild afternoons, but the holiday weekend can still turn warm or wet. Runners in the 100 face a long Friday night where temperatures can drop near freezing.
Past Colorado River Run 100 Mile dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Friday, November 27, 2026 | Upcoming | — |
Colorado River Run 100 Mile FAQ
When is the Colorado River Run 100 Mile?
The 2026 Colorado River Run 100 Mile is on Friday, November 27, 2026.
How do I register for the Colorado River Run 100 Mile?
Register for the Colorado River Run 100 Mile through the official registration link: marathonscout.com/go/colorado-river-run-100-mile/register. It opens the race registration page at runsignup.com.
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